NEAR THRESHOLD CHANNEL SELECTIVE PHOTODISSOCIATION OF NO2

被引：68

作者：

ROBRA, U ^{[1
]}

ZACHARIAS, H ^{[1
]}

WELGE, KH ^{[1
]}

机构：

[1] UNIV BIELEFELD,FAK PHYS,W-4800 BIELEFELD 1,GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1990年 / 16卷 / 03期

关键词：

33.80.G; 82.20.R; 82.50.E;

D O I：

10.1007/BF01437331

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The dynamics of the photodissociation of NO2 into NO(X2ΠΩ″, ν″=0, J″)+O(3P0,1,2) is investigated near the thermodynamic threshold. Cooling the internal degrees of freedom by a supersonic beam expansion provides a nearly complete quantum state selection prior to the predissociation. Measurements of the wavelength dependent dissociation yield into specific product quantum states are reported. At certain wavelengths Λ″ doublet resolved rotational population distributions of the fragments are obtained. Up to an excess energy of Eexc=121 cm-1 about 42% of this energy is partitioned into the rotation of the NO molecules, and correspondingly 58% into the translational degree of freedom. The role of electronic and total parity is discussed. © 1990 Springer-Verlag.

引用

页码：175 / 188

页数：14

共 48 条

[1] A NOMENCLATURE FOR LAMBDA-DOUBLET LEVELS IN ROTATING LINEAR-MOLECULES [J].

ALEXANDER, MH ;

ANDRESEN, P ;

BACIS, R ;

BERSOHN, R ;

COMES, FJ ;

DAGDIGIAN, PJ ;

DIXON, RN ;

FIELD, RW ;

FLYNN, GW ;

GERICKE, KH ;

GRANT, ER ;

HOWARD, BJ ;

HUBER, JR ;

KING, DS ;

KINSEY, JL ;

KLEINERMANNS, K ;

KUCHITSU, K ;

LUNTZ, AC ;

MCCAFFERY, AJ ;

POUILLY, B ;

REISLER, H ;

ROSENWAKS, S ;

ROTHE, EW ;

SHAPIRO, M ;

SIMONS, JP ;

VASUDEV, R ;

WIESENFELD, JR ;

WITTIG, C ;

ZARE, RN .

JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (04) :1749-1753

[2]

ANDERSON JB, 1974, MOL BEAMS LOW DENSIT

[3] NUCLEAR AND ELECTRON DYNAMICS IN THE PHOTODISSOCIATION OF WATER [J].

ANDRESEN, P ;

ONDREY, GS ;

TITZE, B ;

ROTHE, EW .

JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (06) :2548-2569

[4] CREATION OF POPULATION INVERSIONS IN THE LAMBDA-DOUBLETS OF OH BY THE PHOTO-DISSOCIATION OF H2O AT 157 NM - A POSSIBLE MECHANISM FOR THE ASTRONOMICAL MASER [J].

ANDRESEN, P ;

ONDREY, GS ;

TITZE, B .

PHYSICAL REVIEW LETTERS, 1983, 50 (07) :486-488

[5] PHOTOFRAGMENTATION DYNAMICS OF FORMALDEHYDE - CO(V,J) DISTRIBUTIONS AS A FUNCTION OF INITIAL ROVIBRONIC STATE AND ISOTOPIC-SUBSTITUTION [J].

BAMFORD, DJ ;

FILSETH, SV ;

FOLTZ, MF ;

HEPBURN, JW ;

MOORE, CB .

JOURNAL OF CHEMICAL PHYSICS, 1985, 82 (07) :3032-3041

[6]

Bashkin S., 1975, ATOMIC ENERGY LEVELS

[7] EXTINCTION COEFFICIENTS OF NO2 AND N2O4 [J].

BASS, AM ;

LEDFORD, AE ;

LAUFER, AH .

JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS SECTION A-PHYSICS AND CHEMISTRY, 1976, 80 (02) :143-166

[8]

BERSOHN R, 1984, J PHYS CHEM-US, V88, P5195

[9] STATE SELECTIVE PHOTODISSOCIATION DYNAMICS OF A STATE AMMONIA .1. [J].

BIESNER, J ;

SCHNIEDER, L ;

SCHMEER, J ;

AHLERS, G ;

XIE, XX ;

WELGE, KH ;

ASHFOLD, MNR ;

DIXON, RN .

JOURNAL OF CHEMICAL PHYSICS, 1988, 88 (06) :3607-3616

[10] STATE SELECTIVE PHOTODISSOCIATION DYNAMICS OF A STATE AMMONIA .2. [J].

BIESNER, J ;

SCHNIEDER, L ;

AHLERS, G ;

XIE, XX ;

WELGE, KH ;

ASHFOLD, MNR ;

DIXON, RN .

JOURNAL OF CHEMICAL PHYSICS, 1989, 91 (05) :2901-2911

← 1 2 3 4 5 →